- a former palace in central London, England, originally built in the reign of Henry III: execution of Charles I, 1649.
- the main thoroughfare in London, England, between Trafalgar Square and the Houses of Parliament.
- the British government or its policies.
- a city in central Ohio, near Columbus.
- a city in W Pennsylvania, near Pittsburgh.
- a street in London stretching from Trafalgar Square to the Houses of Parliament: site of the main government offices
- the British Government or its central administration
